B1567 — Lamp Headlamp High-Beam Circuit Failure

What is the most common cause of B1567?

The most common causes are: body control module (BCM) fault, faulty switch, motor or actuator of the affected system, corroded or loose connectors.

Is it safe to drive with B1567?

Usually safe to drive — body codes rarely affect drivability. Exceptions: exterior lighting and wipers in bad weather, and central locking faults that can leave the car unsecured.

How much does it cost to fix B1567?

BCM repair or replacement — $300–$900; Replace the switch or actuator — $120–$450; Repair wiring or connectors — $80–$250. Exact cost depends on the root cause, your vehicle and local labor rates — a proper diagnosis is the cheapest first step.

How do I diagnose B1567 myself?

Start with a scan: confirm B1567, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the lamp headlamp high-beam circuit, and verify the suspect component against live data before buying parts.

What does OBD2 code B1567 mean?

OBD2 code B1567 flags a problem with the body electrical system (lamp headlamp high-beam circuit failure). The car is usually drivable while you plan the repair. Common culprits: body control module (BCM) fault, faulty switch, motor or actuator of the affected system, corroded or loose connectors.

When the engine control module decides to log trouble code B1567, it's telling you something specific has gone wrong in your vehicle's body electrical system. Specifically, B1567 points to a lamp headlamp high-beam circuit failure — meaning the pathway responsible for your high-beam headlights has stopped working correctly. This is one of the OBD2 codes that falls under the body/chassis category rather than the powertrain category, so while it's a legitimate issue, it won't directly affect how your engine runs.

The module doesn't throw this code after a single glitch. It monitors the high-beam circuit continuously, and B1567 only gets stored when the fault condition shows up repeatedly under specific operating circumstances. Think of it as the ECU needing confirmation before alerting you — a one-time hiccup won't trigger the light. When B1567 does get recorded, the module also saves freeze frame data alongside it. This snapshot captures engine load, RPM, coolant temperature, and vehicle speed at the exact moment the fault occurred. That information is gold when you're trying to recreate the problem during diagnosis.

The body control module serves as the nerve center for most electrical functions in modern vehicles — everything from lighting and power windows to door locks and wipers runs through it. When any part of that network develops a problem, the BCM either flags the issue directly or relays it to the engine control module, which then stores the corresponding trouble code. B1567 is the result of that monitoring process catching a genuine fault in the high-beam circuit.

Symptoms of B1567

• The high-beam headlights either stop working entirely or operate only intermittently when activated
• The high-beam indicator on the dashboard may fail to illuminate even when the headlights are switched to high-beam mode
• Other body electrical functions — such as interior lighting, power locks, or window controls — could exhibit problems simultaneously if the underlying issue affects a shared circuit or the BCM itself
• No noticeable changes to engine performance, throttle response, or fuel economy — B1567 is strictly a body system code
• The check engine light or a dedicated body system warning lamp illuminates on the instrument cluster

Common Causes

• Faulty body control module — the most serious and expensive possibility, where the BCM itself develops internal failures affecting multiple circuits
• Blown fuse or failed relay — high-beam circuits are protected by fuses, and a relay controls power delivery to the headlights
• Damaged or corroded wiring connectors — moisture intrusion, road salt, and age cause connectors to corrode or pins to spread, creating high resistance
• Worn or failed headlight switch — the stalk or dashboard switch that activates high beams can wear out over time
• Broken wiring in door jambs or hinge areas — flexing wires in areas that move repeatedly eventually fatigue and break
• Faulty high-beam relay or module — some vehicles use a separate relay or control module for headlight operation

How to Diagnose B1567

1. Start by connecting a professional-grade OBD2 scanner to verify B1567 is stored in the system. Document the freeze frame data before clearing anything — those recorded conditions (engine load, RPM, temperature, vehicle speed) tell you exactly what circumstances triggered the code.

2. Pull all stored codes from every module on the vehicle. Related trouble codes often point toward the root cause rather than just the symptom. Also check manufacturer technical service bulletins for your specific make, model, and year — many body electrical codes have documented fixes or software updates that dealers can apply.

3. Visually inspect the entire high-beam circuit wiring harness. Look for chafed insulation, melted wires near heat sources, broken strands, and any signs of previous repair work that might have been done incorrectly.

4. Test the high-beam circuit with a multimeter while someone activates the high-beam switch. Check for proper voltage at the headlight connector and verify ground continuity. A circuit that shows intermittent readings needs closer inspection.

5. Pay special attention to flex points — the areas where wires pass through door jambs and around hinges. These spots experience the most physical stress and fail more frequently than anywhere else in the wiring system.

6. Clear B1567 after your inspection, then perform a complete drive cycle that includes the exact conditions captured in the freeze frame data. If the code returns, you've confirmed an active fault that needs repair.

Repair Options for B1567

Repair costs for B1567 vary widely depending on which component in the high-beam circuit is actually at fault. Always start with the cheapest and most common possibilities before investing in expensive parts.

Body control module (BCM) replacement or repair — $300–$900
This is the nuclear option and the most expensive repair. BCM failures typically affect multiple electrical functions simultaneously.

High-beam switch or relay replacement — $120–$450
A worn stalk switch or failed relay is a frequent culprit and falls in the moderate price range depending on your vehicle.

Wiring harness repair or connector replacement — $80–$250
Corroded connectors, broken wires, or damaged insulation in door jambs can often be repaired without expensive parts.

How Much Does It Cost to Fix B1567?

For most vehicles, fixing B1567 costs between $80 and $900 depending entirely on what needs to be replaced. At the low end, cleaning corroded connectors and replacing a single fuse runs minimal expense. At the high end, BCM replacement requires both expensive parts and significant labor. The average repair lands somewhere in the middle once a proper diagnosis identifies the exact failing component. Spending $50–$100 on professional diagnostic time before buying parts almost always saves money compared to guessing wrong on expensive components.

Can You Drive with B1567?

B1567 carries a short-term safety rating — meaning you can continue driving, but the problem should be addressed soon. While your engine and transmission won't be affected by this body electrical code, disabled high-beam headlights significantly reduce nighttime visibility and road safety. Driving without functioning high beams on unlit roads or in poor weather conditions creates genuine hazard. Additionally, if the underlying fault also affects central locking or other security-related functions, leaving the vehicle unsecured creates liability concerns. Prioritize fixing B1567 within a few days rather than weeks.

Related OBD2 Codes

• B1500: Lamp Turn Signal Left Circuit Open
• B1501: Lamp Turn Signal Left Circuit Short To Battery
• B1502: Lamp Turn Signal Left Circuit Short To Ground
• B1503: Lamp Turn Signal Right Circuit Failure
• B1504: Lamp Turn Signal Right Circuit Open
• B1505: Lamp Turn Signal Right Circuit Short To Battery